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Cougar Flashing Headlights

Q.
Vincent, Never in my life have I ever seen anything like this. I have a 1990 Mercury Cougar and whenever you turn on the head lights (it takes about 25 to 40 minutes) they start flashing off and on. Nothing else is affected but the head lights. I have changed the head light switch and the 60 amp breaker for the lights.

The only way I can get a steady light at night to see were I am going is to pull the bright light switch toward me and hold it. If I put the bright lights on it still blinks off and on. This is driving me nuts trying to figure this one out. If you have any suggestions I would greatly appreciate it.

Thanks,
Craig

A. I'm going to assume if you have Daytime Running lights, you would have told me.

The only other thing that I can think of that would cause the headlights to blink like this is the Ambient Light Sensor on the rear view mirror, if you have Automatic Headlights.

If you don't, then the only thing I could suggest is replacing the headlight relay.